If you have a use case where you are connecting to devices on different network keys and/or different frequencies simultaneously and you are ever searching for those device simultaneously then you should be aware of the possible occurrence of receiving false search results on some platforms. People have typically been running into this problem when connecting to their private network key devices at the same time as ANT+ devices.
Because of the nature of the Android platform sharing the ANT adapter between applications, this can also occur if another app is running concurrently that is configuring channels on different network keys and/or frequencies than your own.
This bug only occurs on certain older platforms. Please refer to the following post: https://www.thisisant.com/forum/viewthread/6402/